/*---------------------------------------------------------------------*/
/* --- STC MCU Limited ------------------------------------------------*/
/* --- STC 1T Series MCU Demo Programme -------------------------------*/
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/* --- Fax: 86-0513-55012956,55012947,55012969 ------------------------*/
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/* --- Web: www.STCMCUDATA.com  ---------------------------------------*/
/* --- QQ:  800003751 -------------------------------------------------*/
/* 如果要在程序中使用此代码,请在程序中注明使用了STC的资料及程序            */
/*---------------------------------------------------------------------*/

#ifndef	__SPI_H
#define	__SPI_H

#include	"config.h"

//========================================================================
//                               SPI设置
//========================================================================

#define		SPI_SSIG_Set(n)					SPCTL = (SPCTL & ~0x80) | (n << 7)		/* SS引脚功能控制 */
#define		SPI_Start(n)						SPCTL = (SPCTL & ~0x40) | (n << 6)		/* SPI使能控制位 */
#define		SPI_FirstBit_Set(n)			SPCTL = (SPCTL & ~0x20) | (n << 5)		/* 数据发送/接收顺序 MSB/LSB */
#define		SPI_Mode_Set(n)					SPCTL = (SPCTL & ~0x10) | (n << 4)		/* SPI主从模式设置 */
#define		SPI_CPOL_Set(n)					SPCTL = (SPCTL & ~0x08) | (n << 3)		/* SPI时钟极性控制 */
#define		SPI_CPHA_Set(n)					SPCTL = (SPCTL & ~0x04) | (n << 2)		/* SPI时钟相位控制 */
#define		SPI_Clock_Select(n)			SPCTL = (SPCTL & ~0x03) | (n)					/* SPI时钟频率选择 */

//========================================================================
//                              定义声明
//========================================================================

#define	SPI_BUF_LENTH	128
#define	SPI_BUF_type	xdata

sbit  SPI_SS    = P1^2;
sbit  SPI_MOSI  = P1^3;
sbit  SPI_MISO  = P1^4;
sbit  SPI_SCLK  = P1^5;

sbit  SPI_SS_2    = P2^2;
sbit  SPI_MOSI_2  = P2^3;
sbit  SPI_MISO_2  = P2^4;
sbit  SPI_SCLK_2  = P2^5;

sbit  SPI_SS_3    = P7^4;
sbit  SPI_MOSI_3  = P7^5;
sbit  SPI_MISO_3  = P7^6;
sbit  SPI_SCLK_3  = P7^7;

sbit  SPI_SS_4    = P3^5;
sbit  SPI_MOSI_4  = P3^4;
sbit  SPI_MISO_4  = P3^3;
sbit  SPI_SCLK_4  = P3^2;

#define	SPI_Mode_Master		1
#define	SPI_Mode_Slave		0
#define	SPI_CPOL_High		1
#define	SPI_CPOL_Low		0
#define	SPI_CPHA_1Edge		0
#define	SPI_CPHA_2Edge		1
#define	SPI_Speed_4			0
#define	SPI_Speed_16		1
#define	SPI_Speed_64		2
#define	SPI_Speed_2			3
#define	SPI_MSB				0
#define	SPI_LSB				1

typedef struct
{
	u8	SPI_Enable;		//ENABLE,DISABLE
	u8	SPI_SSIG;			//ENABLE, DISABLE
	u8	SPI_FirstBit;	//SPI_MSB, SPI_LSB
	u8	SPI_Mode;			//SPI_Mode_Master, SPI_Mode_Slave
	u8	SPI_CPOL;			//SPI_CPOL_High,   SPI_CPOL_Low
	u8	SPI_CPHA;			//SPI_CPHA_1Edge,  SPI_CPHA_2Edge
	u8	SPI_Speed;		//SPI_Speed_4,SPI_Speed_16,SPI_Speed_64,SPI_Speed_128
} SPI_InitTypeDef;


extern	bit B_SPI_Busy; //发送忙标志
extern	u8 	SPI_RxCnt;
extern	u8 	SPI_RxTimerOut;
extern	u8 	SPI_BUF_type SPI_RxBuffer[SPI_BUF_LENTH];


void	SPI_Init(SPI_InitTypeDef *SPIx);
void	SPI_SetMode(u8 mode);
void	SPI_WriteByte(u8 dat);

#endif